please answer these 5 questions! thank you so much and please answer all 5 questions and i can give thumbs up, otherwise a thumbs down :)))

Which of the following statements correctly describe research questions and null hypotheses? [2 points] A research question asks whether an independent variable has an effect. A research question is the assumption that there is no effect. A null hypothesis states that an independent variable has an effect. A null hypothesis is the assumption that there is no effect. A null hypothesis is the assumption that the data has missing or undefined values. A null hypothesis allows us to test with absolute certainty whether something is true or false. Which of the following statements are correct p-value interpretations? [2 points] We can reject the null hypothesis at p